Propyl gallate is a chemical compound that is commonly used as an antioxidant in food, cosmetic, and pharmaceutical industries. This compound is also called propyl 3,4,5-trihydroxybenzoate. Synonyms for propyl gallate include propyl 3,4,5-trihydroxybenzoate, propyl gallate ester, E 310, and gallic acid propyl ester. Other names for this compound include Gallic Acid Propyl Ether, Propyl 3,4,5- Trihydroxybenzoate, Progallin P, and Propyl Ester of Gallic Acid. The compound is also called n-propyl gallate, n-propyl 3,4,5-trihydroxybenzoate, and 2-O-Propyl-1,3,4-trihydroxybenzene.